CN115539749A

CN115539749A - Flange with vibration partition function

Info

Publication number: CN115539749A
Application number: CN202211256915.XA
Authority: CN
Inventors: 周怀林; 周祥; 叶夏建; 周礼兵; 王保山
Original assignee: Jiangsu Jinye Titanium Industry Co ltd
Current assignee: Jiangsu Jinye Titanium Industry Co ltd
Priority date: 2022-10-14
Filing date: 2022-10-14
Publication date: 2022-12-30
Anticipated expiration: 2042-10-14
Also published as: CN115539749B

Abstract

The invention relates to the field of pipeline connection, in particular to a flange with a vibration partition function. The work of water hammer or mechanical equipment etc. all can lead to the petroleum pipeline vibrations to appear, can will shake when one side pipeline takes place to shake and reach opposite side pipeline, and pipeline vibrations can make the bolt of junction appear not hard up, and gasket leakproofness reduces, causes the pipeline junction oil leak to appear, and the bolt drops, splits even. A flange with a vibration isolating function comprises a first connecting pipe, wherein a connecting ring is fixedly connected to the first connecting pipe, the connecting ring is communicated with a corrugated pipe for pressure buffering, and a buffering assembly is arranged on the connecting ring. According to the invention, through the matching of the first connecting pipe and the corrugated pipe, the transverse vibration and the longitudinal vibration of the second connecting pipe are buffered, so that the vibration transmission is cut off, the longitudinal dislocation of the corrugated pipe is avoided through the arrangement of the buffer component, meanwhile, the vibration is ensured not to be transmitted to the first connecting pipe, the flange joint is prevented from being subjected to overlarge stress, and a better vibration cutting-off effect is realized.

Description

Flange with vibration partition function

Technical Field

The invention relates to the field of pipeline connection, in particular to a flange with a vibration isolation function.

Background

The flange connection is that two pipelines and pipe fittings are firstly fixed on the flange plates, then a gasket is added between the two flange plates, and finally the two flanges are fixed through bolts, and the flange connection is applied to various pipeline connections by virtue of the advantages of convenient disassembly, strong pressure resistance of joints and the like.

Present flange connected mode is rigid connection, the in-process of petroleum pipeline transport oil, because water hammer (the phenomenon that oil pipe valve closed and lead to the sudden increase of petroleum pipeline internal pressure in the twinkling of an eye) or mechanical equipment's work etc. all can lead to the petroleum pipeline to appear shaking, can reach opposite side pipeline with shaking when one side pipeline takes place to shake, the pipeline vibrations can make the bolt of junction appear becoming flexible, the gasket leakproofness reduces, cause the pipeline junction to appear leaking oil, the bolt drops, cracked problem even, and when water hammer appears in the petroleum pipeline.

In order to solve the technical problem, a high-sealing flange with a vibration isolation function is provided.

Disclosure of Invention

In order to solve the work of water hammer or mechanical equipment etc. and all can lead to the petroleum pipeline to appear shaking, can will shake when the pipeline of one side takes place to shake and reach the opposite side pipeline, pipeline vibrations can make the bolt of junction appear not hard up, and gasket leakproofness reduces, causes the pipeline junction to appear leaking oil, and the bolt drops, cracked problem even, provides a high sealed flange that has the vibrations and cut off the function.

The technical scheme of the invention is as follows: the utility model provides a flange with vibrations cut off function, including first conveyer pipe, first conveyer pipe rigid coupling has first flange, first flange has the second flange through bolted connection, second flange intercommunication has first connecting pipe, the material of first connecting pipe is deformable material, the one end rigid coupling that the second flange was kept away from to first connecting pipe has the go-between, the go-between rigid coupling has the bellows, the bellows intercommunication has the second connecting pipe, the one end that the bellows was kept away from to the second connecting pipe is provided with the third flange, the third flange has the fourth flange through bolted connection, be provided with the gasket between third flange and the fourth flange, the cross section of gasket is provided with dumbbell shape, fourth flange rigid coupling has the second conveyer pipe, be provided with the buffering subassembly that is used for the bellows to support on the second connecting pipe.

Preferably, the thickness of both ends of the outer side surface of the first connecting pipe is higher than that of the middle part, so that the service life of the first connecting pipe is prolonged.

Preferably, the diameter of one end of the corrugated pipe is larger than that of the other end of the corrugated pipe, so that the residual quantity of petroleum impurities and solid particles in the corrugated pipe is reduced.

Preferably, the inner diameter of the second flange is gradually reduced from one end close to the first connecting pipe to one end close to the first flange, and the second flange is matched with the corrugated pipe to ensure that the flow rates of the first conveying pipe and the second conveying pipe are equal.

Preferably, the inner wall of the second connecting pipe close to one end of the corrugated pipe is provided with a spiral groove, and impurities and solid particles at the crack of the corrugated pipe are removed by petroleum under the guiding action of the spiral groove.

Preferably, a metal ring is arranged in the gasket and used for increasing the supporting force of the inner side and the outer side of the gasket.

Preferably, the buffering component comprises an L-shaped rod, the L-shaped rod is circumferentially arranged on the second connecting pipe, a limiting ring is slidably arranged at one end, away from the second connecting pipe, of the L-shaped rod, a circular ring is circumferentially arranged on the connecting ring, a spring is fixedly connected between the circular ring and the limiting ring, and a connecting rod used for supporting the first connecting pipe is connected between the second flange and the connecting ring in a spherical mode.

Preferably, still including the protection subassembly, be provided with the protection subassembly that is used for the protection of water hammer in the second connecting pipe, the protection subassembly is including the U-shaped pipe, the U-shaped pipe symmetry communicates in the second connecting pipe, the second connecting pipe internal rotation is connected with first bull stick, the rigid coupling has the torsional spring between first bull stick and the second connecting pipe, the U-shaped pipe rotates and is connected with the sealed spheroid with first bull stick rigid coupling, sealed spheroid is provided with the through-hole, the middle part rigid coupling of first bull stick (1302) has the shutoff board that is used for shutoff second connecting pipe, the second connecting pipe is provided with drive assembly, drive assembly is used for supplementary shutoff board upset, first bull stick cover is equipped with and is used for sealed sleeve pipe.

Preferably, the driving assembly comprises a second rotating rod, the second rotating rod is rotatably connected to the second connecting pipe, the second rotating rod is fixedly connected with a cam matched with the blocking plate, the cam rotates anticlockwise, the right end of the blocking plate is lifted, the second rotating rod is fixedly connected with symmetrically distributed blocking plates, the blocking plates are located in the U-shaped pipes, and the second rotating rod (sleeved with a sleeve for sealing) is arranged.

The invention has the following advantages: according to the invention, through the matching of the first connecting pipe and the corrugated pipe, the transverse vibration and the longitudinal vibration of the second connecting pipe are buffered, so that the vibration transmission is cut off, the longitudinal dislocation of the corrugated pipe is avoided through the arrangement of the buffer component, meanwhile, the vibration of the second conveying pipe cannot be transmitted to the first conveying pipe, and the condition that oil leaks or even the joint is broken due to the overlarge stress on the flange joint is avoided, so that a better vibration cutting-off effect is realized.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a partial sectional view of the three-dimensional structure of the present invention.

Fig. 3 is an enlarged schematic perspective view of the invention at a.

FIG. 4 is a partial cross-sectional view of a three-dimensional structure of a cushioning assembly according to the present invention.

Fig. 5 is a partial cross-sectional view of a first alternative embodiment of the shield assembly of the present invention.

Fig. 6 is a partial cross-sectional view of a second alternative embodiment of the shield assembly of the present invention.

Fig. 7 is a partial cross-sectional view of a third alternative embodiment of the shield assembly of the present invention.

Fig. 8 is a partial cross-sectional view of a fourth alternative embodiment of a shield assembly according to the present invention.

Labeled in the figure as: 1-a first delivery pipe, 2-a first flange, 3-a second flange, 4-a first connecting pipe, 5-a connecting ring, 6-a bellows, 7-a second connecting pipe, 701-a helical groove, 8-a third flange, 9-a fourth flange, 10-a gasket, 11-a second delivery pipe, 12-a buffer component, 1201-an L-shaped rod, 1202-a limiting ring, 1203-a circular ring, 1204-a spring, 1205-a connecting rod, 13-a protective component, 1301-a U-shaped pipe, 1302-a first rotating rod, 1303-a sealing sphere, 1304-a sealing plate, 1305-a second rotating rod, 1306-a cam, 1307-a blocking plate.

Detailed Description

The invention is further described in the following examples, which are intended to illustrate, unless otherwise explicitly stated or limited, terms such as: the arrangement, installation, connection are to be understood broadly, for example, they may be fixed, detachable, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The installation directions of the invention are not fixed, but opposite, and all the words are easy to understand.

Example 1

A flange with a vibration isolating function is disclosed, as shown in figures 1-3, and comprises a first conveying pipe 1, a first flange 2 is fixedly connected to the right end of the first conveying pipe 1, the first flange 2 is connected with a second flange 3 through bolts, the inner diameter of the second flange 3 is gradually reduced from right to left, a first connecting pipe 4 is communicated with the right side of the second flange 3, the first connecting pipe 4 is made of a deformable material, the thickness of two ends of the outer side surface of the first connecting pipe 4 is higher than that of the middle part of the outer side surface of the first connecting pipe 4, the service life of the first connecting pipe 4 is prolonged, a connecting ring 5 is fixedly connected to the right end of the first connecting pipe 4, a corrugated pipe 6 is welded to the connecting ring 5, the diameter of the corrugated pipe 6 is gradually increased from right to left, when oil flows through the corrugated pipe 6, the diameter of the corrugated pipe 6 is gradually increased from right to left, the expansion joint on the left side of the corrugated pipe 6 does not influence the oil circulation, so that the residual quantity of oil impurities and solid particles in the corrugated pipe 6 is reduced, because the inner diameter of the second flange 3 is gradually reduced from right to left, the inner diameter of the pipeline changed by the corrugated pipe 6 is compensated through the second flange 3, the flow rate of the inflow of the first conveying pipe 1 is ensured to be equal to the flow rate of the outflow of the first conveying pipe 1, the corrugated pipe 6 is communicated with the second connecting pipe 7, one end of the second connecting pipe 7 close to the corrugated pipe 6 is provided with a spiral groove 701, when oil flows through the spiral groove 701, part of the oil rotates to impact solid particles or impurities in the corrugated pipe 6, so that the solid particles or the impurities are prevented from being accumulated and solidified in the corrugated pipe 6 for a long time to influence the expansion and contraction amount of the corrugated pipe 6, one end of the second connecting pipe 7 far away from the corrugated pipe 6 is provided with a third flange 8, the third flange 8 is connected with a fourth flange 9 through bolts, a gasket 10 is arranged between the third flange 8 and the fourth flange 9, and the cross section of the gasket 10 is provided with a dumbbell shape, increase area of contact between gasket 10 and fixed disk and the fourth flange 9, be provided with two becket in the gasket 10 for increase the holding power of gasket 10 inside and outside, realized better sealed effect, fourth flange 9 rigid coupling has second conveyer pipe 11, is provided with the buffering subassembly 12 that is used for bellows 6 to support on the second connecting pipe 7.

In the process of conveying petroleum by a petroleum pipeline, the petroleum pipeline vibrates due to the operation of a water hammer (a phenomenon that the pressure in the petroleum pipeline is increased suddenly when a tubing valve is closed) or mechanical equipment, the vibration of the petroleum pipeline is divided into transverse vibration or longitudinal vibration, or the transverse vibration and the longitudinal vibration occur simultaneously, the direction of petroleum flowing in the following pipeline is from right to left, the petroleum enters from the right end of a second conveying pipe 11 and is discharged from the left end of a first conveying pipe 1, in order to avoid the situation that the second conveying pipe 11 transmits the vibration to the first conveying pipe 1, the following measures are taken:

when the second conveyer pipe 11 transversely shakes (the transverse shaking direction is the second conveyer pipe 11 axis direction), the second conveyer pipe 11 drives the transverse shaking of fourth flange 9, fourth flange 9 drives the transverse shaking of second connecting pipe 7 through third flange 8, because the spacing of buffering subassembly 12, go-between 5 can't be transverse motion, second connecting pipe 7 drives bellows 6 and carries out the transverse contraction, absorb and cushion the transverse shaking of second connecting pipe 7, it drives go-between 5 and transversely shakes to have avoided second connecting pipe 7, realize the effect that the transverse shaking cut off.

When the second conveying pipe 11 is vibrated longitudinally (the longitudinal vibration direction is a process of randomly moving a plane perpendicular to the oil flow direction), taking the second conveying pipe 11 moving upwards as an example, the second conveying pipe 11 drives the fourth flange 9 to move upwards, the fourth flange 9 drives the second connecting pipe 7 to move upwards through the third flange 8, due to the buffering effect of the buffering component 12, the second connecting pipe 7 drives the right end of the corrugated pipe 6 to move upwards first, then, the left end of the corrugated pipe 6 is driven to move upwards through the buffering component 12 and the connecting ring 5, thereby avoiding the situation that the corrugated pipe 6 is damaged due to the longitudinal dislocation (the longitudinal dislocation refers to the phenomenon that one section of the corrugated pipe 64 suddenly moves upwards to an adjacent section of the corrugated pipe), the left end of the corrugated pipe 6 moves upwards, because the material of the deformable material of the first connecting pipe 4, and under the limit of the buffering component 12, the right end of the first connecting pipe 4 moves upwards, the left end of the first connecting pipe 4 is fixedly connected with the second connecting ring 3, the connecting ring 6 cannot move upwards, when the first connecting pipe 4 moves upwards, the first connecting pipe 4 and the first connecting pipe 4 is stably connected with the first connecting pipe 4, the first connecting pipe 4 cannot move upwards, and the first connecting pipe 4 cannot move, the first connecting pipe 4 can not deform due to the buffer the influence of the buffer effect that the first connecting ring 4 and the first connecting pipe 4 can be damaged due to the buffer effect of the first connecting pipe 4, due to the limitation of the buffer component 12, the length of the first connecting pipe 4 cannot be changed, the first connecting pipe 4 drives the left end of the corrugated pipe 6 to move leftwards through the connecting ring 5, the corrugated pipe 6 is stretched, the second connecting pipe 7 is prevented from driving the first conveying pipe 1 to vibrate longitudinally, and the effect of longitudinal vibration isolation is achieved.

When second conveyer pipe 11 appears horizontal vibrations and longitudinal vibration simultaneously, combine above-mentioned two kinds of circumstances, all shake the buffering through bellows 6, to sum up, through the cooperation of first connecting pipe 4 and bellows 6, with the horizontal vibrations and the longitudinal vibration buffering of second connecting pipe 7 for the vibrations transmission is cut off, has avoided bellows 6 to take place vertical dislocation through setting up buffering subassembly 12, and second conveyer pipe 11's vibrations can't reach first conveyer pipe 1 simultaneously, avoids flange joint to receive too big stress, and the cracked condition of junction even appears in the oil leakage, realizes better vibrations and cuts off the effect.

Due to the special shape of the corrugated pipe 6, when oil flows through the corrugated pipe 6, partial solid particles or impurities in the oil can be intercepted by the expansion joint of the corrugated pipe 6, accumulation of the impurities is caused for a long time, the expansion amount of the corrugated pipe 6 is influenced, the corrugated pipe 6 is inconvenient to use, when the oil flows through the corrugated pipe 6, the diameter of the corrugated pipe 6 is gradually increased from right to left, the expansion joint on the left side of the corrugated pipe 6 cannot influence circulation of the oil, so that the residual quantity of the oil impurities and the solid particles in the corrugated pipe 6 is reduced, the inner diameter of the pipeline changed by the corrugated pipe 6 is compensated through the second flange 3, the inflow flow of the first conveying pipe 1 is equal to the outflow flow of the first conveying pipe 1, meanwhile, due to the fact that the spiral groove 701 is arranged at one end, close to the corrugated pipe 6, of the second connecting pipe 7, when the oil flows through the spiral groove 701, partial oil rotates, and then impacts the solid particles or impurities in the corrugated pipe 6, and the solid particles or the impurities are prevented from being accumulated and solidified in the corrugated pipe 6 for a long time, and the expansion amount of the corrugated pipe 6 is influenced.

In the process of installing the third flange 8 and the fourth flange 9, an operator firstly places the gasket 10 between the fixed disk and the fourth flange 9, because the cross section of the gasket 10 is provided with the dumbbell shape, the contact area between the gasket 10 and the fixed disk and the fourth flange 9 is increased, and meanwhile, through the two metal rings arranged in the gasket 10, the supporting force of the inner side and the outer side of the gasket 10 is increased, and a better sealing effect is realized.

Example 2

Based on embodiment 1, as shown in fig. 1 and 4, the buffering assembly 12 includes an L-shaped rod 1201, the L-shaped rod 1201 is circumferentially welded on the second connecting pipe 7, a limiting ring 1202 is slidably disposed at an end of the L-shaped rod 1201 away from the second connecting pipe 7, a ring 1203 is circumferentially mounted on the connecting ring 5, a spring 1204 is fixedly connected between the ring 1203 and the limiting ring 1202, the springs 1204 are circumferentially distributed, and a connecting rod 1205 for supporting the first connecting pipe 4 is spherically connected between the second flange 3 and the connecting ring 5.

In the process of petroleum transportation by the petroleum pipeline, the petroleum pipeline is vibrated due to water hammer (the phenomenon that the pressure in the petroleum pipeline is suddenly increased when the oil pipe valve is closed) or mechanical equipment during working, the vibration of the petroleum pipeline is divided into transverse vibration or longitudinal vibration, or the transverse vibration and the longitudinal vibration are simultaneously generated, the flowing direction of petroleum in the following pipeline is from right to left, and the petroleum enters from the right end of the second transportation pipe 11 and is discharged from the left end of the first transportation pipe 1, so that the vibration is transmitted to the first transportation pipe 1 by the second transportation pipe 11, and the following measures are taken:

when horizontal vibrations (horizontal vibrations direction is second conveyer pipe 11 axis direction) appear in second conveyer pipe 11, second conveyer pipe 11 drives fourth flange 9 and transversely shakes, fourth flange 9 drives second connecting pipe 7 and transversely shakes through third flange 8, because the spacing of connecting rod 1205, go-between 5 can't be lateral motion, second connecting pipe 7 drives bellows 6 and carries out horizontal shrink, absorb and cushion the horizontal vibrations of second connecting pipe 7, second connecting pipe 7 has been avoided driving go-between 5 and has been transversely shaken, realize the effect that horizontal vibrations cut off.

When the second conveying pipe 11 vibrates longitudinally (the longitudinal vibration direction is a process of moving randomly in a plane perpendicular to the oil flow direction), taking the upward movement of the second conveying pipe 11 as an example, the second conveying pipe 11 drives the fourth flange 9 to move upward, the fourth flange 9 drives the second connecting pipe 7 to move upward through the third flange 8, the second connecting pipe 7 drives the right end of the corrugated pipe 6 and the L-shaped rod 1201 to move upward, the L-shaped rod 1201 drives the stop ring 1202 to move upward, the stop ring 1202 slowly drives the ring 1203 to move upward due to the buffering effect of the spring 1204, the ring 1203 drives the connecting ring 5 to move upward, the connecting ring 5 drives the left end of the corrugated pipe 6 to move upward, and in conclusion, due to the buffering effect of the buffering component 12, the right end of the corrugated pipe 6 moves upward first, and the left end of the corrugated pipe 6 moves upward, the situation that the corrugated pipe 6 is damaged due to the fact that the corrugated pipe 6 is longitudinally dislocated under the condition of large-amplitude longitudinal vibration (longitudinal dislocation refers to the phenomenon that one section of telescopic pipe of the corrugated pipe 6 suddenly deviates upwards from the adjacent section of telescopic pipe) is avoided, the left end of the corrugated pipe 6 drives the connecting ring 5 to move upwards along with the upward movement of the left end of the corrugated pipe 6, the left end of the corrugated pipe 6 cannot move upwards under the buffering action of the buffering component 12 when the right end of the corrugated pipe 6 moves upwards because the first connecting pipe 4 is made of deformable materials, and the connecting ring 5 drives the right end of the first connecting pipe 4 to move upwards under the limiting action of the connecting rod 1205, and meanwhile, the situation that the first connecting pipe 4 is damaged due to the fact that the first connecting pipe 4 is suddenly deformed due to the fact that the left end of the corrugated pipe 6 instantaneously drives the first connecting pipe 4 to move upwards through the connecting ring 5 is avoided, and because the thickness of the two ends of the outer side surface of the first connecting pipe 4 is higher than the middle part, after first connecting pipe 4 receives frequent vertical vibrations, its junction still can possess good steadiness and can appear and warp, first connecting pipe 4's life has been increased, because connecting rod 1205's is spacing, first connecting pipe 4's length can't change, when first connecting pipe 4 right-hand member was upwards, first connecting pipe 4 drove the left end of bellows 6 and moves left, bellows 6 is stretched, it drives first conveyer pipe 1 and does vertical vibrations to have avoided second connecting pipe 7, realize the effect that vertical vibrations cut off.

When horizontal vibrations and longitudinal vibration appear simultaneously in second conveyer pipe 11, combine above-mentioned two kinds of circumstances, all shake the buffering through bellows 6, to sum up, through the cooperation of first connecting pipe 4 and bellows 6, with the horizontal vibrations and the longitudinal vibration buffering of second connecting pipe 7 for the vibrations transmission is cut off, has avoided bellows 6 to take place vertical dislocation through setting up spring 1204, and the vibrations of second conveyer pipe 11 can't reach first conveyer pipe 1 simultaneously, avoids flange joint to receive too big stress, the cracked condition of junction even appears in the oil leakage, realizes better vibrations and cuts off the effect.

Due to the special shape of the corrugated pipe 6, when oil flows through the corrugated pipe 6, part of solid particles or impurities in the oil can be intercepted by the telescopic joint of the corrugated pipe 6, accumulation of the impurities is caused for a long time, the expansion amount of the corrugated pipe 6 is influenced, the corrugated pipe 6 is inconvenient to use, when the oil flows through the corrugated pipe 6, the diameter of the corrugated pipe 6 is gradually increased from right to left, the telescopic joint on the left side of the corrugated pipe 6 cannot influence circulation of the oil, so that the residual amount of the oil impurities and the solid particles in the corrugated pipe 6 is reduced, meanwhile, because the spiral groove 701 is arranged at one end, close to the corrugated pipe 6, of the second connecting pipe 7, part of the oil rotates when the oil flows through the spiral groove 701, further impact on the solid particles or the impurities in the corrugated pipe 6 is avoided, and the solid particles or the impurities are prevented from being accumulated and solidified in the corrugated pipe 6 for a long time, and the expansion amount of the corrugated pipe 6 is influenced.

Example 3

On the basis of embodiment 2, as shown in fig. 2 and fig. 6 to 8, the hydraulic hammer protection device further includes a protection component 13, the protection component 13 for water hammer protection is disposed in the second connection pipe 7, the protection component 13 includes a U-shaped pipe 1301, the U-shaped pipe 1301 is symmetrically communicated with the second connection pipe 7, a first rotating rod 1302 is rotatably connected in the second connection pipe 7, a torsion spring is fixedly connected between the first rotating rod 1302 and the second connection pipe 7, the U-shaped pipe 1301 is rotatably connected with a sealing ball 1303 fixedly connected with the first rotating rod 1302, the sealing ball is provided with a through hole for oil to flow through, a blocking plate 1304 for blocking the second connection pipe 7 is welded in the middle of the first rotating rod 1302, the blocking plate 1304 is made of polyethylene, the polyethylene has corrosion resistance and is light in material, the second connection pipe 7 is blocked more quickly, the second connection pipe 7 is provided with a driving component, the driving component is used for assisting in overturning the blocking plate 1304, a casing for sealing is sleeved on the first rotating rod 1302, and oil is prevented from leaking from a connection position between the first rotating rod 1302 and the second connection pipe 7.

The driving assembly comprises a second rotating rod 1305, the second rotating rod 1305 is rotatably connected to a second connecting pipe 7, the second rotating rod 1305 is fixedly connected with a cam 1306 matched with the plugging plate 1304, the cam 1306 rotates anticlockwise, the right end of the plugging plate 1304 is lifted, the second rotating rod 1305 is fixedly connected with blocking plates 1307 which are symmetrically distributed, the blocking plates 1307 are located in the U-shaped pipe 1301, the second rotating rod 1305 is sleeved with a sleeve for sealing, and oil is prevented from leaking from the connecting position of the second rotating rod 1305 and the second connecting pipe 7.

When a water hammer occurs in the second delivery pipe 11, the pressure in the second delivery pipe 11 is suddenly increased, the pressure on the right side is instantly increased, high-pressure oil impacts the blocking plate 1307 through the U-shaped pipe 1301, the blocking plate 1307 drives the cam 1306 to rotate anticlockwise through the second rotating rod 1305, the torsion spring fixedly connected with the cam 1306 stores the force, the cam 1306 jacks the right end of the blocking plate 1304, when the right end of the lower surface of the blocking plate 1304 is higher than the lowest point of the inner surface of the second connecting pipe 7, the high-pressure oil directly impacts the lower surface of the blocking plate 1304, the blocking plate 1304 rotates anticlockwise, the blocking plate 1304 drives the sealing ball 1303 to rotate anticlockwise through the first rotating rod 1302, the torsion spring fixedly connected with the first rotating rod 1302 stores the force, when the blocking plate 1304 rotates 90 degrees, the second connecting pipe 7 is blocked by the blocking plate 1304, the material of the blocking plate 1304 is polyethylene, the polyethylene has corrosion resistance and is light, the second connecting pipe 7 is blocked more quickly, the sealing ball 1303 blocks the left end of the U-shaped pipe 1301, the pressure of the right end is not transmitted leftward any more, high-pressure petroleum is prevented from entering the corrugated pipe 6, and the problem that the corrugated pipe 6 is broken is caused, so that a better water hammer preventing effect is achieved.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. The utility model provides a flange with shake cuts off function, a serial communication port, including first conveyer pipe (1), first conveyer pipe (1) rigid coupling has first flange (2), first flange (2) have second flange (3) through bolted connection, second flange (3) intercommunication has first connecting pipe (4), the material of first connecting pipe (4) is deformable material, the one end rigid coupling that second flange (3) were kept away from in first connecting pipe (4) has go-between (5), go-between (5) rigid coupling has bellows (6), bellows (6) intercommunication has second connecting pipe (7), the one end that bellows (6) were kept away from in second connecting pipe (7) is provided with third flange (8), third flange (8) have fourth flange (9) through bolted connection, be provided with gasket (10) between third flange (8) and fourth flange (9), the cross section of gasket (10) is provided with dumb bell shape, fourth flange (9) rigid coupling has second flange (11), be provided with the buffer unit (12) that are used for bellows (6) to support on second connecting pipe (7).

2. A flange with vibration isolation function according to claim 1, wherein the thickness of the two ends of the outer side surface of the first connecting pipe (4) is higher than that of the middle part, so that the service life of the first connecting pipe (4) is prolonged.

3. A flange with vibration isolation function according to claim 1, wherein the diameter of one end of the corrugated pipe (6) is larger than that of the other end thereof, so as to reduce the residual amount of petroleum impurities and solid particles in the corrugated pipe (6).

4. A flange with vibration isolation function according to claim 1, characterized in that the inner diameter of the second flange (3) is gradually reduced from the end near the first connecting pipe (4) to the end near the first flange (2), and the second flange (3) is matched with the corrugated pipe (6) to ensure that the flow rates of the first delivery pipe (1) and the second delivery pipe (11) are equal.

5. A flange with vibration isolation function according to claim 1, characterized in that the inner wall of the second connecting pipe (7) near one end of the corrugated pipe (6) is provided with a spiral groove (701), and the oil removes impurities and solid particles at the crack of the corrugated pipe (6) under the guiding action of the spiral groove (701).

6. A flange with vibration isolation function according to claim 1, wherein a metal ring is provided in the gasket (10) for increasing the supporting force of the inner and outer sides of the gasket (10).

7. A flange with a vibration isolation function according to claim 1, wherein the buffer assembly (12) comprises an L-shaped rod (1201), the L-shaped rod (1201) is circumferentially arranged on the second connecting pipe (7), a limiting ring (1202) is slidably arranged at one end, away from the second connecting pipe (7), of the L-shaped rod (1201), a circular ring (1203) is circumferentially arranged on the connecting ring (5), a spring (1204) is fixedly connected between the circular ring (1203) and the limiting ring (1202), and a connecting rod (1205) for supporting the first connecting pipe (4) is spherically connected between the second flange (3) and the connecting ring (5).

8. The flange with the vibration isolation function according to claim 1, further comprising a protection component (13), wherein the protection component (13) for protecting a water hammer is arranged in the second connecting pipe (7), the protection component (13) comprises a U-shaped pipe (1301), the U-shaped pipe (1301) is symmetrically communicated with the second connecting pipe (7), a first rotating rod (1302) is rotationally connected in the second connecting pipe (7), a torsion spring is fixedly connected between the first rotating rod (1302) and the second connecting pipe (7), the U-shaped pipe (1301) is rotationally connected with a sealing ball (1303) fixedly connected with the first rotating rod (1302), the sealing ball is provided with a through hole, a blocking plate (1304) for blocking the second connecting pipe (7) is fixedly connected in the middle of the first rotating rod (1302), the second connecting pipe (7) is provided with a driving component, the driving component is used for assisting in overturning the blocking plate (1304), and a sleeve for sealing is sleeved on the first rotating rod (1302).

9. A flange with a vibration isolation function according to claim 8, characterized in that the driving assembly comprises a second rotating rod (1305), the second rotating rod (1305) is rotatably connected to the second connecting pipe (7), the second rotating rod (1305) is fixedly connected with a cam (1306) matched with the blocking plate (1304), the cam (1306) rotates anticlockwise, the right end of the blocking plate (1304) is lifted, the second rotating rod (1305) is fixedly connected with symmetrically distributed blocking plates (1307), the blocking plates (1307) are positioned in the U-shaped pipe (1301), and the second rotating rod (1305) is sleeved with a sleeve for sealing.